no doubt your been to doom9.org, and tried Gordian knot (bundleds dvddcrypter, dvdv skrink, think vobcopy), it has all that stuff (windoze oriented though).
i had DVD Dcrypter under Crossover Office Pro 3, damn thing
seem unable to grab devices, I think it may be permissions, etc
. try making a link to your cdrom ,for DVD dcrpyter to see.
i am trying the hard way , using compiling MPlayer 1pre5 and MEcoder, seem my amndrake 10.2 kernel headers are to high
ie; proggie for 2.4.XX not 2.6.XX.
im giving slackware 10 a try out - so far my dvd rom and dvd burna is not being picked up. try inserting a line in /etcfstab